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implement TextureMatrixScale with a vertex shader

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This commit is contained in:
Glenn Maynard
2005-02-01 03:04:32 +00:00
parent cf99203db5
commit 588f2a31ff
3 changed files with 238 additions and 3 deletions
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stepmania/src/RageDisplay_OGL_Extensions.cpp
+64
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@@ -16,6 +16,7 @@
#include "glext.h"
#include "RageDisplay_OGL_Extensions.h"
#include "RageLog.h"
#include "arch/LowLevelWindow/LowLevelWindow.h"
GLExt_t GLExt;
@@ -102,4 +103,67 @@ void GLExt_t::Load( LowLevelWindow *pWind )
if( HasExtension("GL_EXT_draw_range_elements") )
GLExt.glDrawRangeElements = (PFNGLDRAWRANGEELEMENTSPROC) pWind->GetProcAddress("glDrawRangeElements");
m_bGL_ARB_shader_objects = HasExtension("GL_ARB_shader_objects");
if( m_bGL_ARB_shader_objects )
{
func_t funcs[] = {
F( glCreateShaderObjectARB ),
F( glCreateShaderObjectARB ),
F( glCreateProgramObjectARB ),
F( glShaderSourceARB ),
F( glCompileShaderARB ),
F( glGetObjectParameterfvARB ),
F( glGetObjectParameterivARB ),
F( glGetInfoLogARB ),
F( glAttachObjectARB ),
F( glDeleteObjectARB ),
F( glLinkProgramARB ),
F( glUseProgramObjectARB ),
F( glVertexAttrib2fARB ),
F( glVertexAttrib3fARB ),
F( glVertexAttrib4fARB ),
F( glEnableVertexAttribArrayARB ),
F( glDisableVertexAttribArrayARB ),
F( glVertexAttribPointerARB ),
NULL
};
if( !LoadAllOrNothing(funcs, pWind) )
m_bGL_ARB_shader_objects = false;
}
m_bGL_ARB_vertex_shader = m_bGL_ARB_shader_objects && HasExtension("GL_ARB_vertex_shader");
if( m_bGL_ARB_vertex_shader )
{
func_t funcs[] =
{
F( glBindAttribLocationARB ),
NULL
};
if( !LoadAllOrNothing(funcs, pWind) )
m_bGL_ARB_vertex_shader = false;
}
m_bGL_ARB_shading_language_100 = HasExtension("GL_ARB_shading_language_100");
if( m_bGL_ARB_shading_language_100 )
{
while( glGetError() != GL_NO_ERROR )
;
const char *pzVersion = (const char *) glGetString( GL_SHADING_LANGUAGE_VERSION );
GLenum glError = glGetError();
if( glError == GL_INVALID_ENUM )
{
LOG->Info( "No GL_SHADING_LANGUAGE_VERSION; assuming 1.0" );
m_iShadingLanguageVersion = 100;
}
else
{
const float fVersion = strtof( pzVersion, NULL );
m_iShadingLanguageVersion = int(roundf(fVersion * 100));
/* The version string may contain extra information beyond the version number. */
LOG->Info( "OpenGL shading language: %s", pzVersion );
}
}
}